Strup H21101-SS 99-00 Honda Civic Si (DOHC) 4-1 Stainless Steel Header
T-304 #1 grade stainless steel tubing, polished to a bright luster. 1 5/8” x 2” mandrel bent tubing X .065 wall thickness.
Flange is 3/8” thick stainless steel.
All headers are TIG welded construction.
Strup H21101 4-1 header fits the B16 motors
Provides 10-12 horsepower gains.
All Strup Headers re-use the OEM stock manifold metal gaskets.
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